S1

Question 1

When you have median, mode and mean how do you know if there is positive skew?

Answer 1

Mode

Question 2

When you have median, mode and mean how do you know if there is negative skew?

Answer 2

Mean

Question 3

When you have the quartiles how do you know if there is no skew?

Answer 3

Q3 - Q2 = Q2 - Q1

Question 4

When you have the quartiles how do you know if there is positive skew?

Answer 4

Q3 - Q2 > Q2 - Q1

Question 5

When you have the quartiles how do you know if there is negative skew?

Answer 5

Q3 - Q2

Question 6

What is a statistical model?

Answer 6

A simplification of a real world situation which can be used to predict real world problems

Question 7

What are four advantages of statistical models?

Answer 7

1. ) quick
2. ) easy to produce
3. ) helps to understand real world problems
4. ) helps to make predictions

Question 8

What are three disadvantages of statistical models?

Answer 8

1. ) it simplifies the situation
2. ) only describes part of the situation
3. ) only works in certain situations

Question 9

When you have median, mode and mean how do you know if there is no skew?

Answer 9

Mode = Median = Mode